Hot-air ftjbbtace



NTTED STATES PATENT OFFTQF,

JOS. C. TREAT, OF EAST HARTFORD, CONNECTICUT HOT-AIR FURNACE.

Specification of Letters Patent No. 8,276, dated August 5, 1851.

To all whom, t may concern:

Be it known that'I, Josnri-i C. TREAT, of East Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in. Hot-Air Furnaces for Heating and Ventilating Rooms or Buildings; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part ot this specification, in which-- Figure l, is a side elevation with part broken away to exhibit the swivel lire grate.

Fig. 2, is a longitudinal section. Fig. 3, is a plan, and Fig. il is a sectional plan taken in direction of the line o, 0, Fig. 2.

The same letters of reference denote similar parts thro-ugliout the several figures.

The nature of my invention consists in the employment ot a suitable tire-pot pro` vided with a swivel grate for clearing out, and communicating with a tire chamber, which by raised and projecting surfaces, acts as a distributer, and the flue from which, by a suitably constructed valve, and by the employment of appropriate passages, serves either to throw the draft in a direct line, or to divert it and cause the flame or heated air to dip down the flue connected with the tire chamber and enter up through an in` ternal tlue and so on to the branch carrying ott flue.

To enable others skilled in the art to make and use by invention I will proceed to describe its construction and operation.

A, is the tire pot which may be lined with soapstone, tire brick or other suitable ma terial, it is surrounded by an ornamental outer radiating case B, and C, is an ash pit, having a register D, in its door for admitting air.

E, is a swivel tire grate, or series of bars, being operated by a rod F, passing` through the ash pit, and when carrying fuel the bars are in a horizontal plane as in Fig. 2, but when clearing oi' discharging the vtire they may be made to swivel and to approach a vertical position as shown in Fig. 1.

Gr, isa lire chamber and H, the teed :Hue which in its door is providedv with a valve I, opening outward to admit air and prevent explosion from generation of gas which frequently occurs when the ire is first lit.

J, is the smoke pipe or flue rising troin` the tire chamber G, and containing an internal smaller and shorter iiue K, which leaves an annular space between it and the flue J, that is covered in at the top by a Bange on the flue K; the iue or chamber J, is provided near its top with apertures a, a., a, and has a valve b, at its bottom operated by a vertical spindle c so as t-o close or open the bottom of the flue J, which has apertures e, e, e, closed or opened by the arms forming the valve I), which is worked with a. reciprocating circular movement, being similar to an ordinary register, (or anv other form of valve may be used). The upper plate ot' t-he tire chamber G, is studded with spherical projections (l, d, l for radiatingheat, and has hollow upright angular projections j', y", f, (constituting in appearance a star form) surrounding the lue J, with which they communicate by the apertures a., a, a, and are closed at the top and open at the bottoni to the tire chamber G, and serving as tlues when the draught is divert-ed and for distribution of heat, The internal flue K, of less length than the outer chamber or lue J is open, top and bottom having a cross tie g, or narrow strip for carrying the spindle c, and it freely communicates with the globulai' radiator L, at the end of the branch M, (leading to the chimney) which is provided with a throttle valve N, operating as a damper but more particularly to shut or open the branch M, being worked by the rod N, and being situated between passages z', j, of a radiator O, which may be made in two parts, forming vertical channels or lues by the passages 2', j, whichare prevented from meeting by small partition projections (seen in Fig. running the depth ot the radiator, the flues 2', y', being carried around the branch M, on eitii er side ot the throttle valve and which being closed in also at theirl bottom. are made to communicate with each other by a short branch I), situated near the bottom of the radiator O, which it will be seen has an open space Z, Z, centrally through its whole length.

rIhe several parts of the furnace may be constructed of metal or any suitable inateiial and should be fixed in a suitable air chamber ,provided with appropriate air inlets and outlets.

The operation in further description is as follows: lVhen iirst lighting the furnace, or when only a direct draft is required, either for the purposes ot' ventilation during warm weather, or for the procurement of a moderate heat only; the valves Y), and

N, are thrown open, thereby causing the flame or hot air and smoke, to pass off through t-he apertures e, e, e, entering the flue J, up through the internal flue K, and soon direct along the branch M, vto the chimney as shown by arrows in red Fig. 2. But When a great heat is required and the furnace is intended to Warm the air of the chamber in which it is situate (and from which branches to convey the heat may be attached) the valves b' and N, are closed, thereby diverting the draft as shown by arrows in blue Fig. 2, the flame or hot air and smoke entering the angular projections f, f', 7", and from them through the apertures a, a, a, dipping down the flue J, and passing up through the internal flue K, -along the branch M, Where the valve N, (being closed or occupying the posit-ion shown by red dotted lines Fig. l) intercepts the draft and causes it to be diverted, the hotair and smoke passing down the flue z', of the radiafaces and project-ions described, the radiator O, by the position of its flues and its proximity to the tire Will induce a current of air to iow up the space Z, Z, and thus by the combination as shown, a large amount of heat generated, Will be imparted as desired, While, the dip caused in the diversion of the draft by closing the valve Z), Will occasion i any floating particles of fuel to be deposited having a valve Z2, and apertures a, a, a, in i combination with an internal flue K, constructed and operating substantially as shown and describeddor the purposes set forth.

JOSEPH C. TREAT.

Witnesses:

CHAs. C. ASHLEY, G. T. PERSONS. 

